#!/usr/bin/env python
#-*- coding: utf-8 -*-
#__author__:vincentlc
#time: 16/4/4 : 13:03

'''
Write a program to check whether a given number is an ugly number.

Ugly numbers are positive numbers whose prime factors only include 2, 3, 5.
For example, 6, 8 are ugly while 14 is not ugly since it includes another prime factor 7.

Note that 1 is typically treated as an ugly number.
'''

class Solution(object):
    def isUgly(self, num):
        """
        :type num: int
        :rtype: bool
        """
        if num == 0:
            return False
        if num == 1:
            return True
        stack = []
        for i in range(1,num+1):
            pass

